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o. R. TYLER & C P. PRIBS. WATER HEATER.

N0.6o2,040. PatentedApr. 5,1898.

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0.1%. TYLER & 0. P. PRIES. WATER HEATER.

Patented Apr. 5, 1898.

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CHARLES RACINE TYLER AND CHARLES PRIES, OF BROOKLYN, NEV YORK;

SAID TYLER ASSIGNOR TO CHARLES E. WALTHER, OF SAME PLACE.

WATER-1H EATER.

SPECIFICATION forming part of Letters Patent No. 602,040, dated April 5,1898.

Application led November 13, 1897. Serial No. 658 ,408. (No model.) i I,To all whom it may concern:

Be it known that we, CHARLES RACINE' invented certain new and usefulImprove-A ments in Tater-Heaters, of which the following is aspecification, reference being had therein to the accompanying drawings.

Our invention relates to portable devices adapted to be placed in orunder water for the purpose of heatingfthe same; and it consists of theparts and the constructions and combinations of parts which we shallhereinafter fully describe and specifically claim. I

The essential object ofr our invention is to provide a heating deviceadapted to be' partly or wholly submerged in water for the purpose ofraising the temperature of the same, the heater being especially usefulfor removing the chill from the natural temperature of water used inbath-tubs for bathing purposes. In most instances water used for thepurpose mentioned is heated by boiler connected with the kitchen-range,although gas stoves and appliances are frequently used during warmweather. Devices of the character herein speciiied save heating thewater by separate boilers and transporting it from said boiler to thebath-tub, which latter fixture is in many instances located one or twostories from the place where the water'is first heated.

The present arrangement providesla simple and comparatively inexpensiveheater which has water-tight joints, adapting it to be wholly or partlysubmerged in the bath-tub, whereby the temperature of the water in thetub may be raised by the heat generated from the burning of gas suppliedtov the interior of the heater from the ordinary house gas-burners. Y

ln the accompanying drawings we illustrate an improved water-heater, andwherein- Figure 1 is a perspective view of a waterheater constructedaccording to our invention. Fig. 2 is a vertical sectional view of thesame on the line y y of Fig. 3. Eig. 3 is a horizontalv sectionalview'on the line a; x of Fig. 2. Figs. 4 and 5 are details ofconstruction to be hereinafter referred to.

.In said drawings, A represents the outside shell or casing, which maybe made of any suitable material, such as copper. This shell orcasingcomprises a dome or cylinder ce, which preferably is tapered from itslower end upwardly, and fromr its upper end extends a pipe'or tube b,which serves as a flue for the escape of the products of combustion. Thelower end of the tapering dome or cylinder is open, and ashort distanceabove this end the cylinder or dome is expanded or formed with anannular enlargement c, to be hereinafter referred to.

Exterior of the cylinder or dome and formed rigid with it, so as toprovide against leakage to the inside ofthe heater, are a series oftubes B,herein shown as three in number, spaced equidistant around thecylinder and having elbowsv d, which open to the inside of the cylinder,just above its bottom edge. These tubes B may be of any appropriateform, but are herein shown as rectangular in cross-section,and theyextend upwardly above the cylinder and serve as air-tubes for supplyingto the heater the necessary constituents to promote the combustion ofthe'fuel (gas) used, the air entering open tops of the tubes and passingin a downward direction through them and being discharged within thecylinder proximate to the burner, as shown.

The parts so far mentioned-namely, the cylinder or dome and theair-tubes-.are made as a single substantially integral structure, theair-tubes being brazed or soldered or otherwise made rigid with thecylinder, and the central flue riveted in place and made watertight bymeans of suitable rings or plates e and washers f, as shown in Fig. 2.

The base C of the heater is formed as a single casting and is supportedupon short legs g. It has in its under side a passage D,

which opens up through the center, .while the inlet end of this passagehas a head or flange h, to which is bolted a head or ange ,provided witha short threaded nipple, to which the gas-inlet pipe E is screwed, saidheads or flanges having an asbestos or other packing or washer lobetween them to insure a watertight joint at this point.

On the upper side of the base and near the outer edge thereof is formedan upwardlyprojecting ange provided withva groove or channel Z, in whichis placed a rubber, as-

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bestos, or other washer or packing m, and within this groove or channeland upon the said washer or packing the lower edge of cylinder or dome Ais seated, the parts being drawn closely together to make a water-tightjoint by means of suitable locking devices, which we will presentlyrefer to.

Just above the base is located a burner F, which comprises a fixed andremovable part. The fixed part F is formed as a single casting and hasvan open center, and it comprises an annular ring substantially U-shapedin cross-section to form a containing-chamber for the gas. The removablepart F2 is designed to be seated on the fixed part and secured theretoby means of bolts adapted to pass through holes in said part F2 and tobe screwed into corresponding holes in the base or bottom of thecompanion part F. removable part F2 or upper section of the burner alsohas a depending flange n around its outer circumference and a seconddepending flange o surrounding itsinner circumference or centralopening, `said flange o having a groove or channel with containedpacking or washer adaptedfto be seated closely upon the flange whichcircumscribes the open center of the fixed member or lower section F ofthe burner, and said upper section has its exterior flange n radiallygroovedv or formed with outlets 19 for the gas, as shown in Fig. 2.

The upper section F2 covers and forms the top of the gas-chamber in thelower section, and the lower section or member is cast with a curvedtube or channel G which carries a ange or head r at one end, whichenables it to be bolted to the top of the base directly in line with thedischarge end of the pipe or passage D, the opposite end of the curvedpipe G opening through the inner wall of4 the lower section of theburner, so as to admit thegas to the interior chamber. In thisgaschamber and just over the discharge end of the curved pipe is a plateor shelf G', which substantially closes the chamber at this point andserves to deflect theiniowing gas, so that it will circulate in thechamber and be discharged through the burner-outlets.

The major diameter of the burner is sufficiently less than the interiordiameter of' the outer shell or casing to provide for the free passageof the heat, and the burner outlets or openings are in line with anddischarge into the enlarged or expanded portion of the outer shell orcasing, so as to tempod rarily retard the upward passagel of the flameand heat and to give more surface heat.

To further increase the heating capacity of the heater, we secure to thetop of the burner by the same bolts or screws which secure the membersof the burner together a cylinder H, which may be made of sheet-iron orother suitable material, and which is slightly tapered from its bottomupwardly to substantially correspond with the taper of the cylinder ordrum A. This cylinder H has a closed bottom resting directly on theburner and an The 1 and the base or table are securely locked toopentop, and its object is, with the companion exterior cylinder or drum, toincrease the heat-radiating surface and thereby facilitate the morerapid heating of the wat-er. To further increase the heating capacity ofthe heater, the central flue or pipe b is materially less in diametertha-n the top of the cylinder or drum A, and the heat from the gaspasses from the burner and first impinges on the expanded annular partof the cylinder and then passes upwardly between this cylinder and theinner cylinder I-I and strikes against the top surface of the cylinder Abefore it escapes through the flue, the latter, because of itscontracted size, serving to hold the heat in the heater as long aspossible, so that the maximum amount of heat may be secured with aslittle consumption of gas as possible.

As before stated, the outer shell or casing gether to form a water-tightjoint, and the means we prefer to use for this purpose consist ofsuitable lock-ups or fastenings J. l (Shown in Figs. 2 and fl.) Thesecomprise suitable bars s, having reduced shanks which are loosely passedthrough openings s in the base and near the outer edge thereof, saidbars having cross-bars t secured to their np.-

; per ends and curved to correspond with the curvature ot' the outershell or case, which latter is provided around its bottom with a flangeu, over which the curved bars t are p passed. The Shanks of the bars sextend below the base and have pivotally secured to them the cam-leversw, a washer being preferably placed between the cam-heads of the ilevers and the under side of the base to receive the wear of said heads.These locking devices are disposed around the base of the heater atregular intervals and their shanks are sufficiently loose in theopenings through which they pass that said devices have enough movementlaterally to enable the curved bars t to be passed over and removed fromthe flange u. To lock the base to the shell or casing, the latter isplaced on the former, with the bottom edge restin gin the groove orchannel Z. Then the curved cross-bars are passed over the flange u andthe levers 'w are turned about their pivots to cause the cam-heads topress against the bottom of the base or the interposed washer andthereby draw the said cross-bars tightly down upon the flange a. Torelease the parts, as when access is desired to the interior of theheater, the levers w are pressed in the opposite direction and thecurved cross-bars lifted off the flange u.

In addition to the parts described we employ a pilot-light to ignite thegas at the burner. This preliminary lighter consists of a tube L,

l carried by a fiexible tube L, connected with the gas-service pipe by avalve-controlled coupling. When the gas is turned into this flexibletube and lighted at the end of the tube L, the latter is passed downinto one of the air-tubes and the gas fed to the burner is lighted atthe burner-outlets.

`The device described is cheaply` constructed, compact, and eective andwill be found extremely useful for the purposes described. It is air andwater tight at its ljoints and presents a maximum of surface areaforeffectinga rapid increase of the temperature ofv the water in orunder which the heater is placed.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

l. In a water-heater, the combination of a base or table having acircumferential groove 0r channel and a passage or pipe in its underside. and leading up through its center, ay

burner supported above said base or table and having a pipe or passageconnecting with the passage in the base, and discharging within theburner, a shell or casing surrounding the burner and having its loweredge seated in the groove or channel ofy the base so as to make a tightjoint therewith, means for detachably locking the shell or casing to thebase and means for admitting air to the burner.

42. A heater adapted to be placed in or under water and consisting of abase formed integrally with a pipe or passage, and means connecting thesame with a gas-supply pipe, said pipe or passage opening up through thecenter of the base; a two-part burner, one of whose members is formedrigid with a pipe or passage which connects at one end with the passagein the base and whose opposite end discharges into the burner, and 'anexterior shell or casing and means for detachably locking it to thebase, and making a tight joint therewith, said shell or casing having aneX- panded or enlarged annular portion in line with the burner-openings.

3. In a heater to be placed in vor under water,the base or table and theburner and means for admitting gas thereto, in combination with a'shellor casing surrounding the burner and made rigid with air-feeding pipesor tubes, a cylinder inside of the shell or casing and secured directlyon top of the burner, and located in the upper; part of the shell orcasing,

and a liue or pipe of reduced diameter leading from the upper. part ofsaid shell or casing.

4. The combination with the base or table, a burner supported above thesame and means for supplying gas thereto, of an exterior shell or casingtapering from its bottom upwardly and made rigid with air-feeding tubesand a central flue of reduced diameter, said shell or casing having anexpanded portion or annular enlargement approximately in line with theburner outlets or openings.

5. The combination of the base, the burner, the exterior shell or casinghaving a flange around its lower-portion, the locking devices for theshell consisting of vertically-disposed bars placed around the base andhavingV having a gas-passage communicating with the passage in thebase,an interior cylinder secured to the" top ofv the burner, an exteriorshell or casing seated on the base and made .rigid with air-feedingpipes and having a central iiue of reduced diameter, leading from itsupper end, means for detachably locking the shell or casing to the base,means for supplying gas to the burner and a pilot-light consisting of atube to be passed into one of the airfeeding tubes to ignite the gas atthe burner.

In testimony whereof vwe afx our signatures in presence of twowitnesses.

CHARLES VRACINE TYLER. CHARLES F. PRIES.

Witnesses:

JOHN P. WILvER, A. B. LooKwooD.

